A **composite fermion** is a concept used in condensed matter physics, particularly in the study of the quantum Hall effect and two-dimensional electron systems. The idea is that under certain conditions, such as in a high magnetic field and low temperature, the behavior of electrons can be effectively described as being made up of composite particles rather than individual electrons.
Ted Hurley is a fictional character from the television series "Better Off Ted," which aired from 2009 to 2010. The show is a satirical workplace comedy that focuses on the employees of a soulless corporation called Veridian Dynamics. Ted Hurley, played by Jay Harrington, is the protagonist and a sympathetic character who often finds himself caught in the absurdities of corporate life and ethical dilemmas posed by the company's practices.
William Burnside (1852–1927) was a prominent British mathematician known for his contributions to group theory, particularly in the field of finite groups. He is well-known for Burnside's lemma, which provides a method to count the number of distinct objects under group actions, and for Burnside's theorem, which gives criteria for a group to be solvable. Burnside's work laid foundational principles that are still widely used in modern algebra and combinatorial species.
Fernando Quevedo is a renowned Spanish writer and poet known for his contributions to literature, particularly during the Spanish Golden Age in the 16th and 17th centuries. He was born in 1580 in Madrid and is recognized for his intricate style and rich use of language. In addition to his literary achievements, Fernando Quevedo is known for his philosophical writings and his involvement in the political and intellectual debates of his time.
"**Mistress Masham's Repose**" is a children's novel written by British author **T.H. White**, first published in 1946. The story revolves around a young girl named Maria Masham, who lives in a fictional estate known as Masham, located in England. After the death of her parents, Maria discovers a hidden community of tiny people, the Lilliputians, living in the grounds of her estate.
"The Monikins" is a novel written by James Fenimore Cooper, published in 1835. It is a satirical work that critiques various aspects of American society, particularly focusing on themes such as social class, politics, and human nature. The story follows the adventures of a group of characters, including a young man named "the Monikin," who is part of a curious race of creatures that resemble humans but possess some distinct differences.
Half-Life: Alyx is a virtual reality (VR) first-person shooter developed and published by Valve Corporation. Released on March 23, 2020, it is set in the same universe as the earlier games in the Half-Life series but is a prequel to Half-Life 2. The game follows Alyx Vance, a key character from the Half-Life franchise, as she battles the Combine, an interdimensional empire that has taken control of Earth.
"Locations of Half-Life" typically refer to the various settings and environments found in the *Half-Life* video game series, which includes the original *Half-Life* game, its sequels (*Half-Life 2* and its episodic expansions), and related titles like *Half-Life: Alyx*.
In physics, a generating function often refers to a formal power series that encodes information about a sequence of numbers or functions in a compact and convenient form. The concept of generating functions is broadly utilized in various areas of mathematical physics, combinatorics, and statistical mechanics.
The "Unreleased Half-Life games" refers to various projects, sequels, and spin-offs in the Half-Life series that were either canceled or never officially released by Valve Corporation. Some notable examples include: 1. **Half-Life 2: Episode Three** - Following the release of Half-Life 2: Episode One and Episode Two, fans expected a third episode to continue the story of Gordon Freeman.
In the context of Hamiltonian mechanics, a Hamiltonian vector field is a vector field that is derived from a Hamiltonian function, which typically represents the total energy of a physical system. The Hamiltonian formulation of classical mechanics describes the evolution of a system in phase space using this vector field. Suppose we have a Hamiltonian function \( H(q, p) \), where \( q \) represents generalized coordinates (position variables) and \( p \) represents generalized momenta.
The Hamilton–Jacobi–Einstein (HJE) equation is a formulation of the equations of motion in the context of general relativity and serves to link quantum mechanics and general relativity. It is an extension of the classical Hamilton-Jacobi theory of motion, which describes the evolution of a dynamical system in terms of a scalar function, known as the Hamilton–Jacobi function or action.
Action-angle coordinates are a set of variables used in Hamiltonian mechanics to represent the state of a dynamical system, particularly in the context of integrable systems. They provide a powerful framework for understanding the long-term behavior of such systems, especially when dealing with periodic or quasi-periodic motion. ### Key Concepts: 1. **Action Variables (J):** Action variables are defined for each degree of freedom in a system, and they are typically calculated as integrals over one complete cycle of motion.
The Kolmogorov–Arnold–Moser (KAM) theorem is a fundamental result in the field of dynamical systems, particularly in Hamiltonian dynamics and classical mechanics. It addresses the stability of certain integrable systems under perturbations and provides conditions under which certain quasi-periodic motions remain stable. Here are the key points about the KAM theorem: 1. **Context**: The theorem primarily concerns Hamiltonian systems, which are a class of dynamical systems characterized by energy conservation.
A monogenic system refers to a system that is governed or determined by a single gene or a single genetic expression. In the context of genetics, "monogenic" indicates that a particular trait or characteristic is controlled by one gene as opposed to polygenic traits, which are influenced by multiple genes. Monogenic disorders are genetic conditions that arise from mutations in a single gene. Examples of monogenic disorders include cystic fibrosis, sickle cell anemia, and Huntington's disease.
A washer is a flat, typically disc-shaped piece of hardware made from various materials, such as metal, plastic, or rubber. It is used in conjunction with a fastener, like a bolt or screw, to distribute the load over a larger surface area and to provide a smooth bearing surface, preventing damage to the material being fastened. Washers also help prevent loosening due to vibration and can provide a seal to prevent the escape of liquids or gases.
Symplectomorphism refers to a specific type of mapping between symplectic manifolds that preserves the symplectic structure. In more detail, a symplectic manifold is a smooth manifold \( M \) equipped with a closed non-degenerate 2-form \( \omega \), known as the symplectic form. This form allows one to define a geometry that is particularly important in the context of Hamiltonian mechanics and classical physics.
Tait's conjecture is a statement in graph theory and topology related to the study of knot diagrams. Proposed by the Scottish mathematician Peter Tait in the 19th century, the conjecture specifically pertains to the number of crossings in alternating knot diagrams.
Hamiltonian completion is a concept in graph theory related to the idea of completing a given graph into a Hamiltonian graph. A Hamiltonian graph is one that contains a Hamiltonian cycle, which is a cycle that visits every vertex in the graph exactly once and returns to the starting vertex. Hamiltonian completion specifically deals with taking an incomplete graph (one that may not be Hamiltonian) and determining whether it is possible to add a certain number of edges to make it Hamiltonian.
"Cables" can refer to several different topics, depending on the context. Here are a few common interpretations: 1. **Electrical Cables**: These are conductors used for transmitting electrical power or signals. They can vary in size, material, and insulation depending on their intended use in residential, commercial, or industrial applications. 2. **Data Cables**: These cables are used to transfer data between devices.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.Figure 4. Visual Studio Code extension tree navigation.Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





